Gamma-ray Burst 200613A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:30:32 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      46
TRIGGER_NUM:     613719013
GRB_RA:          148.250d {+09h 53m 00s} (J2000),
                 148.573d {+09h 54m 18s} (current),
                 147.457d {+09h 49m 50s} (1950)
GRB_DEC:         +45.783d {+45d 46' 60"} (J2000),
                 +45.686d {+45d 41' 11"} (current),
                 +46.019d {+46d 01' 08"} (1950)
GRB_ERROR:       6.25 [deg radius, statistical plus systematic]
GRB_INTEN:       357 [cnts/sec]
DATA_SIGNIF:     18.30 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          60.00 [deg]
GRB_THETA:        30.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.37
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         57.47 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      355.00d {+23h 40m 01s}   -7.90d {-07d 53' 42"}
MOON_DIST:       135.88 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      172.90, 50.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      133.64, 30.77 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:30:41 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      58
TRIGGER_NUM:     613719013
GRB_RA:          150.750d {+10h 03m 00s} (J2000),
                 151.079d {+10h 04m 19s} (current),
                 149.941d {+09h 59m 46s} (1950)
GRB_DEC:         +50.617d {+50d 37' 00"} (J2000),
                 +50.517d {+50d 31' 02"} (current),
                 +50.859d {+50d 51' 31"} (1950)
GRB_ERROR:       5.10 [deg radius, statistical plus systematic]
GRB_INTEN:       508 [cnts/sec]
DATA_SIGNIF:     53.60 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          60.00 [deg]
GRB_THETA:        25.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.92
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      98%  GRB
2nd_MOST_LIKELY:   1%  Generic Transient
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         59.11 [deg]   Sun_angle= -4.6 [hr] (East of Sun)
MOON_POSTN:      355.00d {+23h 40m 01s}   -7.89d {-07d 53' 40"}
MOON_DIST:       132.98 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      164.89, 50.48 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      133.09, 35.86 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:30:54 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      69
TRIGGER_NUM:     613719013
GRB_RA:          151.417d {+10h 05m 40s} (J2000),
                 151.745d {+10h 06m 59s} (current),
                 150.610d {+10h 02m 26s} (1950)
GRB_DEC:         +50.833d {+50d 49' 60"} (J2000),
                 +50.733d {+50d 43' 59"} (current),
                 +51.077d {+51d 04' 37"} (1950)
GRB_ERROR:       4.00 [deg radius, statistical plus systematic]
GRB_INTEN:       1389 [cnts/sec]
DATA_SIGNIF:     144.80 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          60.00 [deg]
GRB_THETA:        25.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      1.02
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      98%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         59.54 [deg]   Sun_angle= -4.6 [hr] (East of Sun)
MOON_POSTN:      355.01d {+23h 40m 01s}   -7.89d {-07d 53' 38"}
MOON_DIST:       133.02 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      164.33, 50.79 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      133.44, 36.24 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:30:51 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      57
TRIGGER_NUM:     613719013
GRB_RA:          149.320d {+09h 57m 17s} (J2000),
                 149.656d {+09h 58m 37s} (current),
                 148.495d {+09h 53m 59s} (1950)
GRB_DEC:         +51.960d {+51d 57' 36"} (J2000),
                 +51.862d {+51d 51' 43"} (current),
                 +52.198d {+52d 11' 54"} (1950)
GRB_ERROR:       2.51 [deg radius, statistical only]
DATA_SIGNIF:     38.90 [sigma]
DATA_INTERVAL:   2.048 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          57.00 [deg]
GRB_THETA:        24.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4173 (Gnd S/W Version number)
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         58.25 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      355.01d {+23h 40m 01s}   -7.89d {-07d 53' 38"}
MOON_DIST:       131.36 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      163.42, 49.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.37, 36.69 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_613719013.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:31:33 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      1
TRIGGER_NUM:     613719013
GRB_RA:          149.170d {+09h 56m 41s} (J2000),
                 149.506d {+09h 58m 01s} (current),
                 148.344d {+09h 53m 23s} (1950)
GRB_DEC:         +51.930d {+51d 55' 48"} (J2000),
                 +51.832d {+51d 49' 55"} (current),
                 +52.168d {+52d 10' 05"} (1950)
GRB_ERROR:       1.48 [deg radius, statistical only]
DATA_SIGNIF:     46.60 [sigma]
DATA_INTERVAL:   5.120 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          57.00 [deg]
GRB_THETA:        24.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         58.15 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      355.01d {+23h 40m 03s}   -7.89d {-07d 53' 30"}
MOON_DIST:       131.33 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      163.51, 49.10 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.28, 36.63 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_613719013.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=8641).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:31:51 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      3
TRIGGER_NUM:     613719013
GRB_RA:          148.890d {+09h 55m 34s} (J2000),
                 149.224d {+09h 56m 54s} (current),
                 148.069d {+09h 52m 16s} (1950)
GRB_DEC:         +51.050d {+51d 02' 60"} (J2000),
                 +50.952d {+50d 57' 08"} (current),
                 +51.287d {+51d 17' 14"} (1950)
GRB_ERROR:       1.13 [deg radius, statistical only]
DATA_SIGNIF:     87.10 [sigma]
DATA_INTERVAL:   12.288 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          57.00 [deg]
GRB_THETA:        25.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         57.95 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      355.01d {+23h 40m 03s}   -7.89d {-07d 53' 27"}
MOON_DIST:       131.95 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      164.87, 49.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.55, 35.75 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_613719013.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=8641).

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Sat 13 Jun 20 05:31:19 UT
NOTICE_TYPE:    INTEGRAL SPI ACS Trigger 
TRIGGER_NUM:    8641,   Sub_Num: 0
GRB_INTEN:      9.58 [sigma]
GRB_TIME:       19806.17 SOD {05:30:06.17} UT
GRB_DATE:       19013 TJD;   165 DOY;   20/06/13
COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
COMMENTS:       Time_Scale=2.0000 and Time_Error=1.0000.
COMMENTS:       
COMMENTS:       NOTE: This SPIACS event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=613719013).
COMMENTS:
COMMENTS:       The SPIACS lightcurve can be found at:
COMMENTS:       ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2020-06/2020-06-13T05-30-05.9897-03600-48016-0.lc

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:32:01 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      4
TRIGGER_NUM:     613719013
GRB_RA:          148.970d {+09h 55m 53s} (J2000),
                 149.304d {+09h 57m 13s} (current),
                 148.149d {+09h 52m 36s} (1950)
GRB_DEC:         +51.070d {+51d 04' 12"} (J2000),
                 +50.972d {+50d 58' 20"} (current),
                 +51.308d {+51d 18' 27"} (1950)
GRB_ERROR:       1.00 [deg radius, statistical only]
DATA_SIGNIF:     128.40 [sigma]
DATA_INTERVAL:   14.336 [sec]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          57.00 [deg]
GRB_THETA:        25.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:        82.03d {+05h 28m 06s}  +23.23d {+23d 14' 01"}
SUN_DIST:         58.00 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      355.01d {+23h 40m 03s}   -7.89d {-07d 53' 25"}
MOON_DIST:       131.96 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      164.81, 49.27 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.59, 35.79 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_613719013.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=8641).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 05:39:35 UT
NOTICE_TYPE:     Fermi-GBM Final Position
RECORD_NUM:      0
TRIGGER_NUM:     613719013
GRB_RA:          149.070d {+09h 56m 17s} (J2000),
                 149.404d {+09h 57m 37s} (current),
                 148.249d {+09h 53m 00s} (1950)
GRB_DEC:         +51.090d {+51d 05' 24"} (J2000),
                 +50.992d {+50d 59' 32"} (current),
                 +51.328d {+51d 19' 40"} (1950)
GRB_ERROR:       1.00 [deg radius, statistical only]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.21 SOD {05:30:08.21} UT
GRB_PHI:          57.00 [deg]
GRB_THETA:        25.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41731 (Gnd S/W Version number)
SUN_POSTN:        82.03d {+05h 28m 08s}  +23.23d {+23d 14' 02"}
SUN_DIST:         58.06 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      355.07d {+23h 40m 17s}   -7.87d {-07d 51' 58"}
MOON_DIST:       131.94 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      164.75, 49.32 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.65, 35.84 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
LOC_URL:         http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_locplot_all_bn200613229.png
COMMENTS:        Fermi-GBM Final Position.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file should be available by the time this FINAL notice is produced.  
COMMENTS:        This notice was generated completely by automated pipeline processing.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=8641).

GCN Circular #27926
The Fermi GBM team reports the detection of a likely LONG GRB
At 05:30:08 UT on 13 Jun 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200613A (trigger 613719013.213684 / 200613229).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 149.1, Dec = 51.1 (J2000 degrees, equivalent to J2000 09h 56m, 51d 06'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 25.0 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_skymap_all_bn200613229.png
The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_healpix_all_bn200613229.fit
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200613229/quicklook/glg_lc_medres34_bn200613229.gif
GCN Circular #27927
F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 613719013 at 05:30:08 on 13 June 2020 were automatically fitted for spectrum and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427; Berlato et al. 2019, ApJ 873, 60).
The best-fit position (1 sigma statistical errors) is:
```
RA(2000.0) = 151.1+/-0.7 deg
Decl.(2000.0) = 44.5+/-0.4 deg
```
We estimate an additional systematic error of 2 deg.
Further details are available at: https://grb.mpe.mpg.de/grb/GRB200613229/
The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB200613229/healpix
The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB200613229/json
GCN Circular #27930
E. Bissaldi (Politecnico and INFN Bari) and S. Lesage (UAH) report on behalf of the Fermi GBM Team:
"At 05:30:08.21 UT on 13 June 2020, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 200613A (trigger 613719013 / 200613229). The Fermi GBM Final Real-time Localization is reported in GCN #27926.
The angle from the Fermi LAT boresight at the GBM trigger time is 25 degrees.
The GBM light curve shows a bright initial emission episode followed by a later weaker emission episode with a duration (T90) of about 470 s (50-300 keV). The time-averaged spectrum from T0 to T0+50 s is best fit by a Band function with Epeak = 111 +/- 3 keV, alpha = -1.08 +/- 0.02, and beta = -2.58 +/- 0.08.
The event fluence (10-1000 keV) in this time interval is (4.10 +/- 0.05)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+12.2 s in the 10-1000 keV band is 27.2 +/- 0.4 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html
For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"

GCN NOTICE

 
TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 13 Jun 20 15:52:49 UT
NOTICE_TYPE:     Fermi-LAT Offline Position
TRIGGER_NUM:     200613229 
GRB_RA:          153.028d {+10h 12m 07s} (J2000),
                 153.343d {+10h 13m 22s} (current),
                 152.255d {+10h 09m 01s} (1950)
GRB_DEC:         +45.850d {+45d 51' 00"} (J2000),
                 +45.748d {+45d 44' 54"} (current),
                 +46.097d {+46d 05' 50"} (1950)
GRB_ERROR:       8.10 [arcmin radius, 90% containment, statistical only]
GRB_DATE:        19013 TJD;   165 DOY;   20/06/13
GRB_TIME:        19808.00 SOD {05:30:08.00} UT
TRIGGER_ID:      0x20000000
MISC:            0x40000000
SUN_POSTN:        82.47d {+05h 29m 54s}  +23.26d {+23d 15' 20"}
SUN_DIST:         60.47 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      359.76d {+23h 59m 02s}   -5.88d {-05d 52' 48"}
MOON_DIST:       134.03 [deg]
MOON_ILLUM:      46 [%]
GAL_COORDS:      171.44, 53.44 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      137.18, 32.18 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi LAT Offline position.
COMMENTS:        This Notice was ground-generated -- not flight-generated.
COMMENTS:        It is the result of human-in-the-loop processing.
COMMENTS:        This is a human generated position of a LAT ground detection.
COMMENTS:        This source corresponds to GBM trigger.

GCN Circular #27931
M. Ohno (Hiroshima Univ.), M. Kovacevic (INFN Perugia), E. Bissaldi (Politecnico & INFN Bari), M. Axelsson (KTH & Stockholm Univ.) and F. Longo (University and INFN, Trieste) report on behalf of the Fermi-LAT Collaboration:
On June 13, 2020, Fermi-LAT detected high-energy emission from GRB 200613A, which was also detected by Fermi-GBM at T0 = 05:30:08 UT (GCN 27926, Bissaldi et al. GCN 27930).
The GRB is detected at high energy (>100 MeV) by Fermi-LAT at a location of:
RA, Dec = 153.03, 45.85 (degrees, J2000) with an error radius of 0.14 deg (90% containment, statistical error only).
This was ~29 deg from the LAT boresight when observations started, and is ~5.9 deg from the GBM final ground position.
The photon flux above 100 MeV in the time interval 0 - 10.000 s after the GBM trigger is 6.6e-07 +/- 3.6e-07 ph/cm2/s.
The estimated photon index above 100 MeV is -1.73 +/- 0.36. The highest-energy photon is a 7.6 GeV event which is observed ~6.2 ks after the GBM trigger.
A Swift ToO has been approved for this burst.
The Fermi-LAT point of contact for this burst is Masanori Ohno ( ohno@astro.hiroshima-u.ac.jp).
The Fermi-LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.
GCN Circular #27932
P. A. Evans (U. Leicester) reports on behalf of the Swift team:
Swift has initiated a ToO observation of the Fermi/LAT GRB 200613A. Automated analysis of the XRT data will be presented online at https://www.swift.ac.uk/ToO_GRBs/00021003
Any uncatalogued X-ray sources detected in this analysis will be reported on this website and via GCN COUNTERPART notices. These are not necessarily related to the Fermi/LAT event. Any X-ray source considered to be a probable afterglow candidate will be reported via a GCN Circular after manual consideration.
Details of the XRT automated analysis methods are detailed in Evans et al. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8).
This circular is an official product of the Swift-XRT team.

GCN Circular #27933
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA),
H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),
D. Buckley (South African Astronomical Observatory),
O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University)
MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 200613A ( Fermi GBM team, GCN 27926) errorbox 44637 sec after notice time and 44665 sec after trigger time at 2020-06-13 17:54:33 UT, with upper limit up to 18.2 mag. Observations started at twilight. The observations began at zenith distance = 42 deg. The sun altitude is -9.8 deg.
The galactic latitude b = 51 deg., longitude l = 173 deg.
Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1380771
We obtain a following upper limits.

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________


   44756 | 2020-06-13 17:54:33 |   MASTER-Kislovodsk | (10h 11m 31.91s , +46d 20m 06.9s) |   C |   180 | 17.2 |        
   44756 | 2020-06-13 17:54:33 |   MASTER-Kislovodsk | (10h 11m 44.05s , +45d 51m 37.8s) |   C |   180 | 17.0 |        
   44897 | 2020-06-13 17:57:54 |   MASTER-Kislovodsk | (09h 50m 41.65s , +52d 24m 17.7s) |   C |    60 | 17.4 |        
   44897 | 2020-06-13 17:57:54 |   MASTER-Kislovodsk | (10h 04m 14.80s , +51d 58m 14.9s) |   C |    60 | 17.2 |        
   44977 | 2020-06-13 17:59:15 |   MASTER-Kislovodsk | (09h 50m 35.85s , +50d 23m 21.1s) |   C |    60 | 17.5 |        
   44977 | 2020-06-13 17:59:15 |   MASTER-Kislovodsk | (10h 03m 33.20s , +49d 57m 12.1s) |   C |    60 | 17.5 |        
   45138 | 2020-06-13 18:01:55 |   MASTER-Kislovodsk | (09h 51m 19.61s , +48d 25m 06.7s) |   C |    60 | 17.6 |        
   45138 | 2020-06-13 18:01:55 |   MASTER-Kislovodsk | (10h 03m 45.71s , +47d 58m 51.5s) |   C |    60 | 17.5 |        
   45278 | 2020-06-13 18:03:16 |   MASTER-Kislovodsk | (10h 11m 37.07s , +46d 17m 06.7s) |   C |   180 | 18.2 |        
   45278 | 2020-06-13 18:03:16 |   MASTER-Kislovodsk | (10h 11m 44.14s , +45d 48m 54.3s) |   C |   180 | 18.2 |        
   45419 | 2020-06-13 18:06:37 |   MASTER-Kislovodsk | (09h 50m 42.12s , +52d 24m 34.5s) |   C |    60 | 18.0 |        
   45419 | 2020-06-13 18:06:37 |   MASTER-Kislovodsk | (10h 04m 12.70s , +51d 58m 30.7s) |   C |    60 | 17.8 |        
   45499 | 2020-06-13 18:07:57 |   MASTER-Kislovodsk | (09h 50m 36.32s , +50d 23m 57.5s) |   C |    60 | 18.1 |        
   45499 | 2020-06-13 18:07:57 |   MASTER-Kislovodsk | (10h 03m 31.39s , +49d 57m 48.8s) |   C |    60 | 17.9 |

Filter C is a clear (unfiltred) band.
The observation and reduction will continue. The message may be cited.

GCN Circular #27935
D. A. Kann (HETH/IAA-CSIC), A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), M. Blazek, C. Thoene, J. F. Agui Fernandez (all HETH/IAA-CSIC), A. Moreno, and H. Vasquez Ramio (both CEFCA) report:
We observed the LAT position of the bright GRB 200613A (Fermi-LAT detection: Ohno et al. GCN #27931, Fermi GBM detection: Bissaldi & Lesage, GCN #27930) with the T80 0.8m telescope at the Observatorio de Javalambre (Teruel, Spain). Observations consisted of 3 x 300 s in g', 3 x 300 s in r', and 5 x 180 s in i'.
At the position of the second reported XRT source, we detect an optical source not seen to several magnitudes deeper in PanSTARRS archival imaging. The source is detected in each frame. The position is RA (J2000) = 10:12:10.08, Dec. (J2000) = 45:54:14.26 with an estimated error of 0".5. There is also a cataloged SDSS source nearby at RA (J2000) = 10:12:10.075, Dec. (J2000) = 45:54:12.88, this may be the host galaxy of the GRB, though we note nothing is detected here in the PanSTARRS image.
Further analysis is in progress. Spectroscopic observations are encouraged.
GCN Circular #27936
J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), B. Sbarufatti (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A. Melandri (INAF-OAB), T. Sbarrato (INAF-OAB), P. D'Avanzo (INAF-OAB) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team:
Swift-XRT has performed follow-up observations of the Fermi/LAT-detected burst GRB 200613A (Ohno et al. GCN Circ. 27931), collecting 4.9 ks of Photon Counting (PC) mode data between T0+43.6 ks and T0+67.6 ks.
Seven uncatalogued X-ray sources are detected, of which one ("Source 2") is above the RASS limit, and is therefore likely the GRB afterglow. Using 4079 s of PC mode data and 4 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 153.04199, +45.75408 which is equivalent to:
```
RA (J2000): 10h 12m 10.08s
Dec(J2000): +45d 45' 14.7"
```
with an uncertainty of 1.4 arcsec (radius, 90% confidence). This position is 5.8 arcmin from the Fermi/LAT position.
The light curve can be modelled with a power-law decay with a decay index of alpha=1.6 (+/-0.5).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.89 (+0.14, -0.13). The best-fitting absorption column is 2.3 (+/-0.5) x 10^21 cm^-2, in excess of the Galactic value of 8.4 x 10^19 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (4.7 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     2.3 (+/-0.5) x 10^21 cm^-2
Galactic foreground: 8.4 x 10^19 cm^-2
Excess significance: 7.5 sigma
Photon index:	     1.89 (+0.14, -0.13)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00021003. The results of the full analysis of the XRT observations are available at https://www.swift.ac.uk/ToO_GRBs/00021003.
This circular is an official product of the Swift-XRT team.
GCN Circular #27937
A. Pozanenko (IKI), S. Belkin (IKI), A. Novichonok (Petrozavodsk State University, KIAM), R. Ya. Inasaridze (AbAO), V.R. Ayvazian (AbAO),� G. V.� Kapanadze (AbAO),� E. Mazaeva� (IKI), A. Volnova (IKI), I. Molotov (KIAM), Sh. Ehgamberdiev (UBAI) report on behalf of IKI-GRB-FuN:
We observed Fermi� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) with Kitab-ISON RC-36� telescope starting on 2020-06-13 (UT) 17:58:33 in Clear filter and AS-32 telescope of Abastumani observatory in R. Within localization area of XRT afterglow (Kennea et al., GCN27936) we� detected the only one object in coordinates (J2000) 10:12:10.02 +45:45:13.7 The object is also visible in SDSS *(SDSS12 J101210.07+454512.8*) as a galaxy**with a photometric redshift of z= 0.4745.
(We believe that Kann et al. (GCN 27935) observed and reported the same object).
We suggest the SDSS galaxy *J101210.07+454512.8* is a host galaxy of GRB 200613A. Preliminary photometry of the source is following
```
Date,����� UT start, t-T0,�� Exp.,� Filter,� OT,�� Err., UL
 ������������������� (mid, days)
2020-06-13� 17:58:33� 0.54057 60*60 CR����� 19.39� 0.20� 19.8
2020-06-13� 18:16:59� 0.55024 50*60� R����� 19.27� 0.07� 22.1
```
The photometry is based on nearby SDSS DR12 stars
```
SDSS-DR12_id������� R(Lupton)
J101149.76+454320.7 12.404
J101245.45+455119.1 13.328
```
GCN Circular #27938
D. A. Kann (HETH/IAA-CSIC) corrects:
The source reported in Kann et al., GCN #27935, lies at coordinates:
```
RA (J2000) = 10:12:10.08
Dec. (J2000) = 45:45:14.26
```
and is therefore coincident with the XRT afterglow (Kennea et al., GCN #27936) and the source detected earlier by Pozanenko et al. (GCN #27937) as well as the potential host galaxy also mentioned by the latter GCN (coordinates in GCN #27935 suffer the same error).
I'm sorry for any inconvenience I may have caused.
GCN Circular #27939
We observed the field of GRB 200613A (Bissaldi and Lesage, GCN #27930; Ohno et al., GCN #27931) with the IO:O camera mounted on the 2-m Liverpool Telescope located in La Palma, Spain. Observations started on June 13th at 22:20:26 UT (0.701 days after the GRB trigger) and we obtained a series of 60s images in the r filter.
We clearly detect in the stacked image the optical afterglow at the position reported by the Swift-XRT (Kennea et al., GCN #27936) and by OAJ, Kitab and AbAO (Kann et al., GCN #27935, GCN #27938; Pozanenko et al., GCN #27937). We measure a preliminary AB magnitude for the afterglow of r = 19.45 +- 0.20 mag (t_mid = 0.705 d) calibrated against Pan-STARRS catalogue stars.
GCN Circular #27943
Z.P. Zhu, X. Liu, S.Y. Fu, D. Xu, J. Zheng, A.Y. Zhou (NAOC) report:
We observed the field of GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) using the Xinglong-2.16m telescope equipped with the BFOSC camera. Observations were carried out starting at 12:44:18 UT on 2020-06-14, and 5x300s R-band frames were obtained.
The previously reported afterglow (e.g., Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939) is clearly detected in our stacked image, with R = 19.45 +/- 0.05 mag (at Tmid-T0 = 1.266 days post-burst), calibrated with nearby Pan-STARRS1.
GCN Circular #27944
F. E. Marshall (NASA/GSFC) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 200613A 43621 s after the FERMI/LAT trigger (Ohno et al., GCN Circ. 27931). A source consistent with the XRT position (Kennea et al., GCN Circ. 27936) is detected in the initial UVOT exposures.
The preliminary UVOT position is:
```
    RA  (J2000) =  10:12:10.03 = 153.04178 (deg.)
    Dec (J2000) = +45:45:14.1  =  45.75391 (deg.)
```
with an estimated uncertainty of 0.46 arc sec. (radius, 90% confidence). This position is consistent with the optical counterparts reported by Kann et al. (GCN Circ. 27935 & 27938) and Pozanenko (GCN Circ. 27937).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white            44416        45204         775         19.65 +/- 0.07
v                45211        45427         213        >18.6
u                43621        44409         775         19.02 +/- 0.12
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #27949
X. Liu, Z.P. Zhu, S.Y. Fu, D. Xu, J. Zheng, A.Y. Zhou (NAOC) report:
We continued to observe the field of GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) using the Xinglong-2.16m telescope equipped with the BFOSC camera. Observations were carried out starting at 12:43:45 UT on 2020-06-15, and 5x300s R-band frames were obtained.
The previously reported afterglow (e.g., Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943) is still clearly detected in our stacked image, with R = 20.0 +/- 0.1 mag (at Tmid-T0 = 2.311 days post-burst), calibrated with nearby Pan-STARRS1.
Further observations are planned.
GCN Circular #27958
S. Belkin (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO), V. R. Ayvazian (AbAO),� G. V. Kapanadze (AbAO),� E. Mazaeva� (IKI), A. Volnova (IKI), I. Molotov (KIAM)� report on behalf of IKI-GRB-FuN:
We continue observations of Fermi� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) with� AS-32 telescope of Abastumani observatory in R-filter. The afterglow (e.g., Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943) is detected in a stacked image. Preliminary photometry of the afterglow is following
```
Date,����� UT start, t-T0, Exp.,� Filter, OT,��� Err., UL
 ������������������� (mid, days)


2020-06-15� 17:44:15 2.53029 49*60� R������ 20.47� 0.11� 21.9
```
The photometry is based on nearby SDSS DR12 stars
```
SDSS-DR12_id������� R(Lupton)
J101149.76+454320.7 12.404
J101245.45+455119.1 13.328
```
GCN Circular #27962
K. L. Murata, N. Ito, R. Hosokawa, R. Adachi, M. Niwano, F. Ogawa, N. Nakamura, S. Ogata, H. Takamatsu, H. Hara, Y. Yatsu, and N. Kawai(TokyoTech) report on behalf of the MITSuME collaboration:
We observed the field of GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan.
The observation started on 2020-06-15 11:33. We did not detect the optical afterglow (Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall et al., GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) in the stacked image. We obtained the 5-sigma limits as follows.
```
T0+[hour] MID-UT T-EXP[sec] 5-sigma limits
------------------------------------------------------------------------------------------------
54 2020-06-15T12:29:27 2040 g'>19.3, Rc>19.5, Ic>18.6
------------------------------------------------------------------------------------------------
T0+: Elapsed time after the burst
T-EXP: Total Exposure time
```
We used the PS1 catalog for flux calibration. The magnitudes are expressed in the AB system. The images were processed in real-time through the MITSuME GPU reduction pipeline (Niwano et al., submitted; https://github.com/MNiwano/Eclair)
GCN Circular #27964
K. Yamaoka (Nagoya U), A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita (AGU), Y. Kawakubo (LSU), S. Nakahira (RIKEN), Y. Asaoka, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena), and the CALET collaboration:
The very long GRB 200613A (Fermi GBM observation: Bissaldi and Lesage, GCN Circ. 27930; Fermi-LAT detection: Ohno et al., GCN Circ. 27931; https://gcn.gsfc.nasa.gov/other/200613A.gcn3) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 05:30:08.657 UTC on 13 June 2020. The burst signal was seen by all CGBM detectors. Because of a problem in one of the ground alert processing script, the GCN notice was not distributed automatically for this event.
The burst light curve shows the main emission episode which starts at T-1 sec, peaks at T+11 sec and ends at T+35 sec, followed by a much weaker emission episode which starts at ~T+278 sec and ends at ~T+423 sec. The T90 and T50 durations measured by the SGM data are 381 +- 34 sec and 268 +- 237 sec (40-1000 keV), respectively.
The ground processed light curve is available at
http://cgbm.calet.jp/cgbm_trigger/ground/1276061388/
The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.
GCN Circular #27971
S.Y. Fu, Z.P. Zhu, X. Liu, D. Xu, J. Zheng, A.Y. Zhou (NAOC) report:
We continued to observe the field of GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931) using the Xinglong-2.16m telescope equipped with the BFOSC camera. Observations were carried out starting at 12:55:02 UT on 2020-06-16, and 5x300s R-band frames were obtained.
The optical afterglow (e.g., Kann et al., GCN 27935; Kennea et al., GCN 27936; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) is still well detected in our stacked image, with R = 21.07 +/- 0.21 mag (at Tmid-T0 = 3.3175 days post-burst), calibrated with nearby Pan-STARRS1.
Compared with our previous measurements, the afterglow now has turned to decay quickly, with a temporal decay index of \alpha ~ 2.5 and a break time of ~ 2.3 days post-burst. This break can be interpreted as a jet break.
Further observations are planned.
GCN Circular #27978
S. Belkin (IKI),� A. Pozanenko (IKI), E. Klunko (ISTP),� M. Eselevich (ISTP), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-GRB FuN:
We observed the� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931; Yamaoka Ohno et al., GCN 27964) with with AZT-33IK 1.5-m telescope of Sayan observatory (Mondy) starting on 2020-06-17 (UT) 16:30:12.
The optical afterglow (e.g., Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) is detected in a stacked image. Preliminary photometry of the afterglow is following
```
Date������ UT start� t-T0��� Filter Exp.�� OT��� Err. UL
 ������������������� (mid, days)���� (s)
2020-06-17 16:30:12� 4.47365 R����� 22*120 20.94 0.14 22.1
```
The photometry is based on nearby SDSS stars
```
SDSS-DR12_id����� R(Lupton)
J101206.52+454606.4 14.962
J101207.75+454443.4 17.877
J101206.50+454322.2 15.151
```
GCN Circular #27982
A. Moskvitin (SAO RAS) on behalf of the larger GRB follow-up team report.
We observed the field of the GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931; Ohno et al., GCN 27964) with the 1m telescope of SAO RAS, Zeiss-1000, equipped with the Multi-Mode Photometer-Polarimeter (MMPP). We obtained 6 x 300 sec. images in Rc band on 2020.06.16 19:05:00--19:45:16 UT, T_mid - T0 = 3.5799 days.
The optical afterglow (Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958; Fu et al., GCN 27971; Belkin et al., GCN 27978) is clearly visible in individual images and stacked frame with the brightness of R = 20.58 +/- 0.05.
The photometry is based on nearby SDSS DR12 stars
```
SDSS_id        R(Lupton)
J101206.52+454606.4 14.962
J101207.75+454443.4 17.877
J101220.88+454613.5 16.508
J101211.59+454721.5 18.659
J101209.58+454817.4 18.076
```
GCN Circular #27983
S. Belkin (IKI), A. Novichonok (Petrozavodsk State University, KIAM), A. Pozanenko (IKI),� E. Mazaeva� (IKI), A. Volnova (IKI), I. Molotov (KIAM), Sh. Ehgamberdiev (UBAI) report on behalf of IKI-GRB-FuN:
We continued observations of GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931; Yamaoka Ohno et al., GCN 27964) with� Kitab-ISON RC-36 telescope in Clear filter. The optical afterglow (e.g., Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943) is detected in a stacked image. Preliminary photometry of the afterglow is following
```
Date,����� UT start, t-T0,�� Exp.,� Filter, OT,��� Err., UL
 ������������������� (mid, days)
2020-06-14� 16:56:58 1.5086� 5460�� CR����� 19.68� 0.13� 21.2
2020-06-15� 16:54:39 2.4997� 4200�� CR����� 20.4�� 0.3�� 20.4
2020-06-16� 16:30:51 3.5005� 7200 � CR � �� n/d �� n/d � 20.5
```
The photometry is based on nearby SDSS DR12 stars
```
SDSS-DR12_id������� R(Lupton)
J101149.76+454320.7 12.404
J101245.45+455119.1 13.328
```
GCN Circular #27998
L. Izzo (DARK/NBI) reports:
We observed the field of GRB 200613A (Bissaldi and Lesage, GCN #27930; Ohno et al., GCN #27931) with the IO:O camera mounted on the 2-m Liverpool Telescope located in La Palma, Spain. Observations started on June 19th at 22:00:00 UT (6.687 days after the GRB trigger) and we obtained a series of 10x60s images in the r filter.
The afterglow (Kann et al., GCN #27935; Pozanenko et al., GCN #27937; Izzo et al., GCN #27939; Zhu et al., GCN #27943; Marshall, GCN #27944; Liu et al., GCN #27949; Belkin et al., GCN #27958; Fu et al., GCN #27971; Belkin et al., GCN #27978; Moskvitin et al., GCN #27982; Belkin et al., GCN #27983) is clearly visible in the combined image. We measure a preliminary AB magnitude r = 21.20 +- 0.30 mag (t_mid = 6.770 d) calibrated against Pan-STARRS catalogue stars.
GCN Circular #27999
Anirban Dutta, Brajesh Kumar, Avinash Singh, G. C. Anupama, D. K. Sahu and B. S. Kiran (IIA, Bengaluru)
We observed the field of GRB 200613A (Fermi GBM team, GCN #27926; Bissaldi et al., GCN #27930; Ohno et al., GCN #27931; Evans, GCN #27932) with the Himalayan Faint Object Spectrograph and Camera (HFOSC) mounted on the 2-m Himalayan Chandra Telescope located at IAO, Hanle, India. Observations started on 2020-06-19 at 15:20:43 UT and we obtained 3 frames, each of 300 sec in the Bessell R-band filter under moderate sky conditions.
The afterglow (Kann et al., GCN #27935; Pozanenko et al., GCN #27937; Zhu et al., GCN #27943; Marshall, GCN #27944; Liu et al., GCN #27949; Belkin et al., GCN #27958; GCN #27978; GCN #27983; Fu et al., GCN #27971; Moskvitin et al., GCN #27982; Izzo, GCN #27998) is clearly visible in the stacked image. We measure a preliminary magnitude of R = 20.59 +/- 0.26 mag calibrated against the USNO-A2.0 catalogue stars. The host contamination has not been removed in the analysis.
We thank the observing staff at IAO and CREST for helping with the observations.
GCN Circular #28000
S. Belkin (IKI), A. Pozanenko (IKI),� V. Rumyantsev (CrAO),� A. Volnova (IKI), E. Mazaeva (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931; Yamaoka Ohno et al., GCN 27964)� with ZTSH 2.6m telescope of CrAO observatory starting on 2020-06-19 (UT) 18:58:23.� The optical afterglow (e.g., Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) is detected in a stacked image. Preliminary photometry of the afterglow is following
```
Date������ UT start� t-T0��� Filter Exp.�� OT��� Err. UL
 ������������������� (mid, days)���� (s)
2020-06-19 18:58:23� 6.58142 R����� 29*120 21.06 0.09 23.6
```
The photometry is based on nearby SDSS star
```
SDSS-DR12_id����� R(Lupton)
J101207.75+454443.4 17.877
```
A light curve of the afterglow of� GRB 200613A can be found in http://grb.rssi.ru/GRB200613A/GRB200613A_lc_v2.png
GCN Circular #28003
S. Belkin (IKI), A. Pozanenko (IKI),� V. Rumyantsev (CrAO),� A. Volnova (IKI), E. Mazaeva (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the� GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et al., GCN 27930; Ohno et al., GCN 27931; Yamaoka Ohno et al., GCN 27964)� with ZTSH 2.6m telescope of CrAO observatory starting on 2020-06-20 (UT) 19:19:12.� The optical afterglow (e.g., Kann et al., GCN 27935; Pozanenko et al., GCN 27937; Izzo et al., GCN 27939; Zhu et al., GCN 27943; Marshall, GCN 27944; Liu et al., GCN 27949; Belkin et al., GCN 27958) is detected in a stacked image. Preliminary photometry of the afterglow is following
```
Date������ UT start� t-T0��� Filter Exp.�� OT��� Err. UL
 ������������������� (mid, days)���� (s)
2020-06-20 19:19:12� 6.58142 R����� 6*120 21.13 0.10 22.7
```
The photometry is based on nearby SDSS star
```
SDSS-DR12_id����� R(Lupton)
J101207.75+454443.4 17.877
```
A light curve of the afterglow of� GRB 200613A can be found in http://grb.rssi.ru/GRB200613A/GRB200613A_lc_v2.png
GCN Circular #29320
A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D.A. Kann (HETH/IAA-CSIC), C.C. Thoene (HETH), M. Blazek, and J. F. Agui Fernandez (both HETH/IAA-CSIC) report:
We obtained spectroscopy of the host galaxy of GRB 200613A (Fermi-LAT detection: Ohno et al. GCN #27931; Fermi GBM detection: Bissaldi & Lesage, GCN #27930; optical counterpart discovery: Kann et al. GCN #27935) with OSIRIS, mounted on the 10.4m GTC telescope (Roque de los Muchachos Observatory, La Palma, Spain). The observation was performed on the 18 January 2021 with mean epoch at 00:02 UT (218.75 days after the burst) and consisted of 3x1200s exposures with grism R1000R, covering the range between 5100 and 10100 �.
The spectrum is characterised by a continuum that is detected over the complete spectral range, with better SNR in the blue part of the spectrum, and has a strong emission feature that we identify as the [OII] 3727/3729 doublet, at a redshift of 1.2280. At a similar redshift of 1.2255 we also identify absorptions due to FeII and MgII, that allow us to confirm the redshift, which we identify as that of GRB 200613A.

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Jochen Greiner, last update: 18-Jan-2021 [Disclaimer]